Dicyclopentadiene-based resin, dicyclopentadiene-based hydrogenated resin, and adhesive resin composition comprising same

Abstract

The present invention relates to: a dicyclopentadiene-based resin having excellent compatibility with a base resin and prepared by being copolymerized with a monomer composition comprising a dicyclopentadiene-based monomer and a vinylamide-based monomer; a dicyclopentadiene-based hydrogenated resin; and an adhesive resin composition comprising same. A dicyclopentadiene-based resin according to the present invention is advantageous in terms of having excellent compatibility with various base resins and being providable as an adhesive resin composition capable of achieving remarkably improved adhesive strength.

The invention claimed is: 
     
       1. An adhesive resin composition comprising a dicyclopentadiene-based hydrogenated resin and a thermoplastic resin,
 wherein the dicyclopentadien-based hydrogenated resin is prepared by hydrogenating a dicyclopentadiene-based resin prepared by copolymerizing a monomer composition including a dicyclopentadiene-based monomer and a vinylamide-based monomer, and the adhesive resin composition has a mixed methylcyclohexane and aniline cloud point of 60° C. or lower, and a diacetone cloud point of 60° C. or lower, 
 and wherein the dicyclopentadiene-based resin has a number average molecular weight (Mn) of 200 to 1,200 g/mol, a weight average molecular weight (Mw) of 250 to 4,000 g/mol, and a Z average molecular weight (Mz) of 300 to 5,000 g/mol. 
 
     
     
       2. The adhesive resin composition of  claim 1 , further comprising an oil. 
     
     
       3. The adhesive resin composition of  claim 2 , wherein the oil includes any one or two or more selected from the group consisting of paraffin-based oils, naphthene-based oils, and aromatic-based oils. 
     
     
       4. The adhesive resin composition of  claim 1 , wherein 50 to 90 wt % of the dicyclopentadiene-based hydrogenated resin and 10 to 50 wt % of the thermoplastic resin are included, based on a total weight of the adhesive resin composition. 
     
     
       5. The adhesive resin composition of  claim 2 , wherein 1 to 60 parts by weight of the oil is included, based on 100 parts by weight of the dicyclopentadiene-based hydrogenated resin and the thermoplastic resin. 
     
     
       6. The adhesive resin composition of  claim 1 , wherein the dicyclopentadiene-based resin is prepared by stepwise thermal polymerization.